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Finding the Fourth Proportional to 633,539.31, 874,294.17 and 347,040.49

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Solution

The fourth proportional to 633,539.31, 874,294.17 and 347,040.49 is: 478,921.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,539.31 : 874,294.17 = 347,040.49 : x
  2. Step 2: Convert to fraction form
    633,539.31/874,294.17 = 347,040.49/x
  3. Step 3: Cross multiply
    633,539.31x = 874,294.17 × 347,040.49
  4. Step 4: Simplify right side
    633,539.31x = 303,415,471,054.27
  5. Step 5: Solve for x
    x = 303,415,471,054.27/633,539.31
  6. Step 6: Final answer
    x = 478,921.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.